That particular unit is hard to find. It was a 1 year only model (it's actually a 75 model). I was able to find one on eBay after months of looking. Here is the specs:
Frankfurt Stereo
US Kit (455)
7635 421 012
The 5 in 7635 indicates the model year.
If someone here doesn't have one, I'd keep trolling eBay.
There is one on eBay now but it's $895
http://www.ebay.com/itm/Restored-Blaupunkt...~t8&vxp=mtrJust an FYI. If the 108 in on the left, it's a 69-70 model. If the 108 is on the right, it's a later model.
Hope this helps.